Shouldnt we limit ourselves to 2-3 cards rather than chasing every other card/offer, otherwise the goal of some meaningful redemption will just take longer? Exceptions could be like one time use of birthday card, which anyway is not there now 🙂
When there are cc offers like in the case of current "Great Indian" sale, we need to have multiple sbi cards for grabbing discounts for multiple products. Same goes for "Big Billion" sale too; multiple axis or icici will help us grab discounts for multiple high value items.